What imprint is used for the aux and return inputs with Kemper Kone?

    I play guitar and windsynth. In small venues, I use the aux and return inputs for my synth (in large ones I always run it through the house PA). What I want is that it should be FRFR, but there's no real indication that I can find that that is the case. The Global Imprint input doesn't allow for setting it to FRFR from what I could tell. I'm very happy with the electric guitar sound. I've tried both using the Global Imprint which I've got set to the Celestion Greenback and the profile setting and both are pleasing. For acoustic guitar, I've set my profiles to explicitly use FRFR, but I'm not sure what to do about the synth.